Exercise device



FIG. 1 is a perspective view of an exercise device showing my new design;

FIG. 2 is a top elevational view thereof;

FIG. 3 is a left side elevational view thereof; the right side elevational view being a mirror image of the left side;

FIG. 4 is a right end elevational view thereof;

FIG. 5 is a left end elevational view thereof; and,

FIG. 6 is a bottom elevational view thereof.

The broken line representations of a fitting in FIGS. 1, 2 and 4 do not limit the claimed design. 

The ornamental design for an exercise device, as shown and described. 